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meriva
3 years ago
11

Solve this system of equations using the elimination method.

Mathematics
2 answers:
Ray Of Light [21]3 years ago
7 0

Answer:

(6, -9)

Step-by-step explanation:

Our system of linear equations is:

6x + 2y = 18

-4x - 2y = -6

When we solve by elimination, we're essentially "eliminating" a variable so that we can solve for other more easily. Here, let's eliminate the y variable by adding the two equations together:

    6x + 2y = 18

+   -4x - 2y = -6

____________

    2x  +  0y = 12

x = 12/2 = 6

Plug this back into one of the original equations to find y:

-4x - 2y = -6

-4 * 6 - 2y = -6

-24 - 2y = -6

-2y = 18

y = -9

The solution is (6, -9).

Romashka [77]3 years ago
3 0

Answer:

(6,-9)

Step-by-step explanation:

6x + 2y = 18

-4x - 2y = -6

2y = -4x + 6

6x - 4x + 6 = 18

2x = 12

x = 6

2y = -4(6) + 6

2y = -18

y = -9

(6,-9)

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Answer: 8648640 ways

Step-by-step explanation:

Number of positions = 7

Number of eligible candidates = 13

This can be done by solving the question using the combination Formula for selection in which we use the combination formula to choose 7 candidates amomg the possible 13.

The combination Formula is denoted as:

nCr = n! / (n-r)! * r!

Where n = total number of possible options.

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Hence, selecting 7 candidates from 13 becomes:

13C7 = 13! / (13-7)! * 7!

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8 0
3 years ago
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Zarrin [17]

Answer:

The answers are a, and d

Step-by-step explanation:

5(10+6) = 50x+30 or 30+50x.

4 0
3 years ago
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VLD [36.1K]

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Answer:

Do you mean which equation should the 5x+10=15 be multiplied to?

it would be -2

Step-by-step explanation:

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Use the distributive property to remove the parentheses. -6(11 - 2)​
salantis [7]

Answer:

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Step-by-step explanation:

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3 years ago
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